Boot and shoe sole trimmer



7 *":5 s. MINOS ET AL BOOT` AND SHOE SOLE TRIMMER Filed April 24, 1955 /7 Z 0 ML 6 ze om a am may 5a v INVENTORS. 6K ,MM/0s Afval l/AM derm..

QL f M ATTORNEY5 Patented Apr. 7, 1936 UNITED STATES PATENT oFFlcE BOOT AND SHOE SOLE TRIMMER Application April 24,

1 Claim.

The invention relates to improvements in a locking device for controlling the movement of two movable members on a shaft, said members comprising a rotatable adjusting sleeve and a cooperating trimmer housing. The trimmer housing is adapted to move longitudinally on the trimmer. The device consists of an eiiicient clutching means whereby on the unclutching and rotation of which the housing means may be preparatorily set and coupled with a collar on the shaft, the setting determining the trimmer face, and held against movement in either direction by the interconnection of a key in the locking device, and hence is made solid with the shaft.

The object of the invention is to provide locking and adjusting means which are simple in structure and use, efcient in operation and economical of manufacture.

The features of our invention which we consider are pointed out with particularity in the appended claim, the invention itself, however, with further objects and advantages will best be understood by reference to the following dscription taken in connection with the accompanying drawing.

Figure l is a central vertical longitudinal section, partly in elevation, portions being broken away.

Figure 2 is an end View of the device partially in section and partially in elevation.

Figure 3 is an end view of the collar, the view being in elevation and showing the radial notches therein.

Figure 4 is a fragmentary side elevation of the device showing the locking sleeve thereon, and a segmental notch therein.

Similar numerals refer to similar parts throughout the several views.

In the construction shown in the drawing there is mounted on and rigidly attached to: the shaft A, a collar I by means of set screws 2, 2.

The inner vertical face 3 of the collar I is pro vided with radial notches or slots as at 4, 5, the purpose of which is hereafter explained. The rim 5 of the collar I is provided with conventional index markings 'l hereafter referred to.

The shaft A has three diameters or portions as at 8, 9 and II). The portion I0 is provided with a left handed screw threaded central bore Il for the reception of a clamping element or screw. A shoulder I2 is provided on lthe shaft A against which the inner face of the annular ring formed on the trimmer bears.

Mounted rotatively on the shaft A is an adjusting sleeve I3, having a flange I4 provided with a 1935, Serial No. 18,070

notch I5 that does not extend completely through the flange as shown in Fig. 1, and also a ball yieldingly urged by means of a coil spring I'l.

The adjusting sleeve I3 is further provided with a screw or helicoidal groove I8 adapted to impart longitudinal motion to the trimmer housing through means operatively engaging in the groove and rigidly xed in the housing.

The key is ixed in the locking sleeve I9, and positioned so as to engage in the notch I5 formed in the flange It integral with the adjusting sleeve I3, and a selected notch in the inner vertical face 3 of the collar I which is provided with radial notches as at 4 and 5 for the reception of the key 2). The locking sleeve I9 has axial movement relative to the flange I4 and rotational movement to the collar I. The locking sleeve has a milled periphery 2|, and has a segmental section 22 removed therefrom to expose the index on the collar I therebelow.

When the device is in clutch the edge 23 of the locking sleeve I9 is in alignment or ilush with the outer vertical face 24 of the collar I.

The key 20 in the locking sleeve I9 is at all times in engagement in the slot I5 in the flange I4, and is of a length that when the locking sleeve I9 is moved forward to release the key 20 from a notch in the vertical face 3 in the collar I, the adjusting sleeve I3 may be rotated to adjust the trimmer housing.

On the inner periphery of the locking sleeve there is provided a partial race 25 for the reception of the spring-controlled ball I6 in the flange I4 of the adjusting sleeve I3. This spring-controlled ball acting in the race 25 makes a balland-socket connection so to speak between the locking sleeve I9 and the flange I4, and provides a means to hold the locking sleeve I9 in operative position. It will be noted that when the locking sleeve I9 is moved to release the key 20 the ball will be out of the race 25, and when locked or clutched in the race as shown in Fig. 1.

The trimmer housing 23 is mounted on the adjusting sleeve I3. The housing is provided with a stud 2l that engages in the helicoidal groove I8 in the adjusting sleeve I3. The trimmer housing 26 is provided with two diametrically spaced pins or studs 28 and 29. These pins are rigidly fixed in the trimmer housing 26 and are adapted to engage in the spaces formed by the teeth on the trimmer.

The trimmer housing 26 is provided with a series of circumferentially spaced openings 30, 30, 30, adapted to free the interior of the housing of detritus.

The leading edge 3| of the trimmer housing 26 is provided with a plurality of cutting edges 32. These cutting edges are adapted to chamfer the edge of the sole of the boot or shoe.

The end 33 of the adjusting sleeve I3 extends slightly beyond the shoulder I2 on the shaft A, and provides a seat for the annular ring 34 on the trimmer 35. The trimmer 35 is mounted on the portion I0 of the shaft A, and extends slightly beyond the end 36 of the shaft A.

The pins or studs 28 and 29 enter in between the teeth 31, 31 of the trimmer 35, as shown in Figure 2. The vamp guard 38 is placed at the end of the trimmer and shrouds the end thereof. The interruptions in the leading edge 3I of the trimmer housing 26 are shown` as at 39, 39 in Figure 2. The device is held in assembled relationship by means of the clamping element or screw 40.

The operation of the device is as follows:-

The device is connected to a spindle of a trimming machine having a proper power source, (machine not shown but understood in the art).

The width of the cutting face of the trimmer 35 having been determined, the locking sleeve I9 is pulled forward toward the vamp guard 38 until the key 20 strikes the rear wall of the slot I5 in the flange I4 of the sleeve I3. This movement disengages the key 2! from the notch in the vertical face 3 of the collar I. The locking sleeve I9 being operatively connected to the adjusting sleeve I3 by means of the key 26 in the locking sleeve, may now be turned in the proper direction, so that the segmental notch 22 in the locking sleeve IS is positioned over the proper index mark on the rim 6 of the collar I. It will be noted that the rotary motion of the locking sleeve I9 imparts a longitudinal movement to the trimmer housing 26 back or forth across the trimmer 35 according to the direction of the rotation of the locking sleeve I9 with respect to the collar I fixed on the shaft A. This is so because the trimmer is made solid with the shaft A by means of the clamping element 4D, and the trimmer housing 26 is prevented from rotation by means of the horizontally extending pins or studs 28 and 29 which extend between the teeth 31, 31 of the trimmer 35, and the trimmer housing is operatively connected to the adjusting sleeve I3 by means of a stud 21 that engages in the helicoidal groove I8 formed in the adjusting sleeve I3.

When the proper index is reached the locking sleeve I9 is moved in a direction from the vamp guard 38, until the locking sleeve edge 23 is flush with the outer edge 24 of the collar I. This clutches the adjusting sleeve I3 with the collar I, and the adjusting sleeve is held against further rotation by the interlocking of the key 20 in the locking sleeve I9 engaging a notch in the collar I.

It is believed that the operation of the mechanism as a whole will be clear, in view of the foregoing description which has been given in connection with that of the construction of the same.

While we have herein shown and described a preferred arrangement, it will be readily understood that changes and modifications therein may be found desirable or essential in meeting the various exigencies of use, and we desire to be understood as reserving the right to make any and all such changes or modifications as may be found desirable or essential in so far as the same may fall within the spirit and scope of the invention as expressed in the accompanying claim when broadly construed.

Having thus described our invention, what we claim and desire to secure by Letters Patent of the United States isz- In a device of the class described, comprising, in combination, a shaft, a collar having radially extending slots in a face thereof and an indexed periphery thereon, the collar rigidly mounted on the shaft, an adjusting sleeve having a helicoidal groove formed therein and a notch formed in a flange thereon, the flange also having a springcontrolled ball therein, the said adjusting sleeve being rotatively mounted on the shaft, a locking sleeve having on its inner periphery a projecting key rigidily connected thereto and a segmental portion removed therefrom to provide an opening through which the index on the collar may be visualized, the locking sleeve being slidably disposed with relation to the said collar and flange and engageable by the said spring-controlled ball, the said ball adapted to prevent shifting of the locking sleeve, the projecting key on the locking sleeve adapted to engage a predetermined notch in the collar face and to denitely and unalterably locate a trimmer housing on a trimmer, the said trimmer housing having an inwardly projecting stud engaging in the helicoidal groove in the adjusting sleeve for insuring engagement of the adjusting sleeve with the trimmer housing, longitudinally extending pins in the housing, a leading edge on the housing having interruptions therein to provide a series of cutting edges therearound, the said housing also having debris removing openings therein, a toothed trimmer mounted on the shaft and surrounded by the trimmer housing, the longitudinal pins in the trimmer housing positioned in the space between the teeth of the trimmer, a vamp guard shrouding the end of the trimmer, and a clamping element adapted to hold the device in assembled relationship.

STEVE MINOS. WILLIAM SEDERIS. 

